145621936 has 20 divisors (see below), whose sum is σ = 289769152. Its totient is φ = 70842816.

The previous prime is 145621913. The next prime is 145621937. The reversal of 145621936 is 639126541.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 145621895 and 145621904.

It is not an unprimeable number, because it can be changed into a prime (145621937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122400 + ... + 123583.

Almost surely, 2^145621936 is an apocalyptic number.

145621936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145621936 is a deficient number, since it is larger than the sum of its proper divisors (144147216).

145621936 is a wasteful number, since it uses less digits than its factorization.

145621936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246028 (or 246022 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 145621936 is about 12067.3914331143. The cubic root of 145621936 is about 526.1088412741.

The spelling of 145621936 in words is "one hundred forty-five million, six hundred twenty-one thousand, nine hundred thirty-six".